@article{10_4064_fm_157_2_3_305_341,
     author = {Maciej P. Wojtkowski},
     title = {Hamiltonian systems with linear potential and elastic constraints},
     journal = {Fundamenta Mathematicae},
     pages = {305--341},
     publisher = {mathdoc},
     volume = {157},
     number = {2},
     year = {1998},
     doi = {10.4064/fm-157-2-3-305-341},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-157-2-3-305-341/}
}